O3 Pro: API pricing, providers and specs
O3 Pro is a text model by OpenAI. 14 providers serve it, from $64 to $84.64 /1M; the lowest price is at APIMart.
Lowest price$64/1Mat APIMart
Maker's price$80/1M20% more than the lowest
Providers14
Context200KMax output 100K
How O3 Pro compares
Against the 737 text models on the site priced the same way.
- Pricey for its class: at $64 /1M, its lowest price is above 98% of comparable models (median $1.10).
- Its 200K-token context window is larger than 32% of them (median 262K), about 300 pages of text.
- 14 providers serve it; 83% of comparable models have fewer.
O3 Pro prices by provider
Every provider's list price, read from its own price page or API. A price marked “from” changes with context length, resolution or mode.
| Provider | Input | Output | Prompt caching | Context |
|---|---|---|---|---|
 Fal | — | $0.14/sec | — | — |
| Fal | — | $0.14/sec | — | — |
| Fal | — | $0.14/sec | — | — |
| APIMart | $16/1M | $64/1M | — | — |
 CometAPI | $16/1M | $64/1M | — | — |
 Poe | $18.18/1M | $72.73/1M | — | 200K |
| OpenAIOfficial | $20/1M | From$80/1M | — | — |
| Vercel AI Gateway | $20/1M | $80/1M | — | 200K |
 Helicone | $20/1M | From$80/1M | — | — |
| OpenRouter | $20/1M | From$80/1M | — | 200K |
 APIYI | $20/1M | $80/1M | — | — |
 LaoZhang API | $20/1M | $80/1M | — | — |
 AIHubMix | $20/1M | $80/1M | $20/1M | 200K |
 Requesty | $20/1M | From$80/1M | $20/1M | 200K |
 Azure | $20/1M | From$80/1M | — | — |
| AI/ML API | $21.16/1M | $84.64/1M | — | — |
- APIMart$64
- CometAPI$64
- Poe$72.73
- Vercel AI Gateway$80
- APIYI$80
- LaoZhang API$80
- AIHubMix$80
- OpenAIOfficialFrom$80
- HeliconeFrom$80
- OpenRouterFrom$80
- RequestyFrom$80
- AzureFrom$80
Prices in US dollars, updated daily from each provider. Prices last checked Oct 25, 2026.
Specs
- Type
- Text
- Maker
- OpenAI
- Inputs
- Image, Text
- Outputs
- Text
- Context
- 200K≈ 300 pages of text
- Max output
- 100K
- Capabilities
- JSON, Reasoning, Tool calling, Vision
- Released
- Jun 10, 2025
- License
- —
- Open weights
- —
Alternatives to O3 Pro
Same kind of model from other makers, at a similar price.
| Model | Lowest price | Context | Arena | Providers |
|---|---|---|---|---|
| O3 Prothis model | $64/1M | 200K | — | 14 |
| Claude Fable 5 | $40/1M | 1M | 1624 | 30 |
| Claude Fable 5.1 | $40/1M | 1M | 1743 | 29 |
 Qwen Deep Research | $23.37/1M | — | — | 1 |
| Claude 2.1 | $39.60/1M | — | — | 1 |
| Claude 3 Opus | $75/1M | — | 1262 | 2 |
| Claude Opus 4.6 | $25/1M | — | — | 1 |
| Claude Mythos 5 | $40/1M | — | — | 3 |
| Claude Mythos 5.1 | $50/1M | — | — | 2 |
More from OpenAI
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All 123 OpenAI modelsO3 Pro FAQ
APIMart, at $64 /1M. 14 providers serve O3 Pro; the table above lists every one with its price.
O3 Pro reads up to 200K tokens per request and writes up to 100K.
We have not found O3 Pro's weights published by its maker.
14 API providers serve O3 Pro. Compare their prices above, or open a provider to see everything it offers.
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